formwork application
TRANSCRIPT
![Page 1: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/1.jpg)
Application of Formwork for High-rise and Complex Building Structures
– the Hong Kong Cases
Raymond Wong Wai Man,
Division of Building Science and Technology,
City University of Hong Kong
![Page 2: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/2.jpg)
1. Introduction
• Formwork system is the key factor determining the success of a construction project in terms of- speed- quality- cost- safety of works
![Page 3: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/3.jpg)
2. Classification of Formwork
• Sizes• Location of use• Materials of construction• Nature of operation• Brand name of the products.
![Page 4: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/4.jpg)
2.1 Classification according to sizes
small-sized formwork
- operation by workers manually - timber and aluminium
large-sized formwork
- crane facilities are required in the operation- reduce the number of jointing and to minimize the number
of lift. - stiffening components - studs and soldier.
![Page 5: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/5.jpg)
2.2 Classification according to location of use
• Different elements in the structure have different design and performance requirements in the use of formwork.
• Some systems are more adaptive for specific location of use, such as
Irregular frame structure – traditional timber form or aluminium formCross Wall – gang form, climb form or jump form Floor – table formRepeated regular section – tunnel form
![Page 6: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/6.jpg)
Aluminium formwork system for residential housing block
Timber formwork for irregular-grid podium structure
![Page 7: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/7.jpg)
Steel panel form (Gang form) for constructing a core wall
Table form for the flat slab structure
![Page 8: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/8.jpg)
Gantry form/tunnel form system for the construction of station facilities
![Page 9: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/9.jpg)
Jump form system used in public housing project
Climb form in the construction of the 50-storey Manulife Tower
![Page 10: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/10.jpg)
2.3 Classification according to materials of construction
• Timber - most popular formwork material - low initial cost - high adaptability to complicated shape- labour intensive and environmental
unfriendly• steel - hot-rolled or cold-formed sections
- heavy weight - suitable for large-sized panels
• Aluminium - stiff and light weight- higher material and labour cost- excellent finish
![Page 11: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/11.jpg)
Detail of wall formwork using manual operable timber panels
The Festival Walk, a super-sized shopping mall constructed in traditional timber formwork system
![Page 12: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/12.jpg)
Examples of steel form in the form of large panel shutters
![Page 13: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/13.jpg)
Detail of a typical aluminium formwork system for apartment-type building
![Page 14: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/14.jpg)
2.4 Classification according to nature of operation
• Manually operated formwork
• Self-lifted formwork
• Crane-lifted formwork
• Gantry, traveling and tunnel type formwork system
![Page 15: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/15.jpg)
Climb form operated by the use of a series of synchronized hydraulic jack systems
![Page 16: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/16.jpg)
Jump form for the construction of a high-rise residential tower –lifting action is done by a series of screw jack systems
![Page 17: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/17.jpg)
• Construction of the 600m-long elevated expressway for theLantau Link using a type of traveling gantry form
• Structure of the ShuiHong Station of the West Rail projects
![Page 18: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/18.jpg)
2.5 Classification according to brand name of the product
Some common names in the market
![Page 19: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/19.jpg)
3. Considerations when using formwork
3.1 Design related considerations
• shape of the building• Architectural features on building exterior• Internal layout• Structural form• Consistence in building dimensions• Span and Headroom • Repetitive nature• Finishing standard
![Page 20: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/20.jpg)
3. Considerations when using formwork
3.2 Construction related considerations
• Complexity of the built environment• Speed of work• No. of possible reuses• Construction planning and arrangement• Area or volume of cast per pour• Involvement of other construction technique• Dependence of work• Provision of construction joint• Accessibility to work• Feasibility of introducing alternative design
![Page 21: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/21.jpg)
Examples of some crucial built situations
very large site
Sloped site
very crowded site
![Page 22: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/22.jpg)
Phasing arrangement to be considered
![Page 23: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/23.jpg)
Examples where special techniques are involved in the construction
Incorporation of precast elements
Incorporation of tensioning and complicated phasing arrangement
![Page 24: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/24.jpg)
Examples where complicated construction jointing requirement are involved
![Page 25: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/25.jpg)
Accessibility problems in formwork process
![Page 26: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/26.jpg)
Accessibility problems in formwork process– more examples
![Page 27: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/27.jpg)
4 Examples of Application4.1 Festival Walk – using traditional
manual-type timber formwork
• 21,000 sq m site. • 4-level basement and
7-level upper structure.
Features:• A 48m-span void
constructed of 8 numbers of cast-in-situ and post-tensioned beams, supported on the sides by bearers
![Page 28: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/28.jpg)
• large span structures up to 32m in length, cast-in-situ, some are post-tensioned.
• 3 atrium spaces, averaged 35m in span, and with 25m headroom
• Average headroom for each floor is about 4.5m.
![Page 29: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/29.jpg)
• Basement -- top-down approach.
• non-repeated layout
• structure subdivided into 6 main phases.
• great number of construction jointing
![Page 30: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/30.jpg)
Other complication/ features of the formwork system as shown in the project
Using the ground surface as formwork soffit
Formwork forming the shape of the drop panel of the flat slab using blinding concrete
![Page 31: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/31.jpg)
Other complication/features of the formwork system
Provision of complicated construction jointing in the formwork
![Page 32: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/32.jpg)
4.2 Belcher’s Garden – using traditional manual-type timber form
• situates on sloped site with area around 24,000 sq m.
• level difference about 65m.
![Page 33: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/33.jpg)
Forming the sloped beams on the formed slope
![Page 34: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/34.jpg)
Construction of the podium structure
![Page 35: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/35.jpg)
Other featurs:
• 10-level podium, used as carpark, shopping mall and recreational facilities
• Six 48-storeyresidential towers built on top of podium
• huge size of podium and sophisticated typographic environment of site, demands complicated phasing and sectioning arrangements
![Page 36: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/36.jpg)
Falsework to support the transfer plate
![Page 37: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/37.jpg)
Detail of transfer plate before concreting
![Page 38: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/38.jpg)
Superstructure
- irregularity in layout
- complicated architectural features in external envelops
- large amount of short-span slabs
- large amount of shear walls in the structure
- use of manuallyoperated timber panel forms
![Page 39: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/39.jpg)
Detail of the floor form layout from an elevated position
![Page 40: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/40.jpg)
Detail of the wall formwork
![Page 41: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/41.jpg)
Detail of wall and floor formwork arrangement as seen from the floor interior
![Page 42: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/42.jpg)
4.3 Lee Garden Hotel Redevelopment – Climb form for core, composite slab and structural steel outer frame
• 50-storey office building
• inner core constructed in reinforced concrete
• outer frame in structural steel
• RC core constructed using the VSL climb form -- self-lifting formwork system using hydraulic jacks
![Page 43: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/43.jpg)
Assembling of the climb form on the ground slab level
![Page 44: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/44.jpg)
The climb form at its trial operation
![Page 45: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/45.jpg)
Details of the Climb-form system
Gantry frame, shutters, rail tracks, and scaffold detail
![Page 46: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/46.jpg)
More detail on the rail track for the panel shutters
![Page 47: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/47.jpg)
Detail of the guide wheel and locking pin
![Page 48: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/48.jpg)
Resizing the form where the section of the core wall changed
![Page 49: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/49.jpg)
4.4 Cheung Kong Center –
• 62-storey office building
• Jump form system for core
•composite slab and concrete-filled steel tube as the outer frame
![Page 50: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/50.jpg)
Layout of the Jump Form rising from the foundation raft
![Page 51: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/51.jpg)
Overall layout arrangement of the Jump Form as seen from an elevated position
![Page 52: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/52.jpg)
Screw jack detail
Formwork arrangement as viewed from the side
![Page 53: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/53.jpg)
The gantry frame that mounted the panel shutters rigidly within the core wall layout
![Page 54: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/54.jpg)
Steel fixing inside the form
![Page 55: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/55.jpg)
Detail seeing the arrangement of the formwork system with the panel shutters in position
![Page 56: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/56.jpg)
Form system as seen from the inner shaft
![Page 57: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/57.jpg)
4.5 Gateway – Climb form for core and table form for slab
• 3 detached building towers each of 38-storey high• structure of towers –
central core with averaged 12m span RC columns around
post-tensioned flat slab system,
core wall - VSL climb form, partially in large panel gang forms
slab – aluminium strutted flying form system
![Page 58: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/58.jpg)
Some sections at the sides of the core wall are formed using large panel shutter
External view of the climb form for the construction of the core wall
![Page 59: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/59.jpg)
Floor slab as seen from various elevations
![Page 60: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/60.jpg)
Wall section of the core before the enclosing with panel shutters.
![Page 61: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/61.jpg)
![Page 62: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/62.jpg)
Other Features
- slab is cast in two separated sections in a staggered manner with a lapse of 2 to 3 storeys to convenient tensioning works, as well as to obtain better operation arrangement in the handling of the formwork
![Page 63: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/63.jpg)
Flat slab and post-tensioning arrangement
![Page 64: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/64.jpg)
Dropped panel at the column head and detail for slab joining to the core wall
![Page 65: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/65.jpg)
4.6 Harbourfront Landmark – Steel panel form for shear walls & table form for slab
• 62-storey residential development with 3 attached towers on a 6,500 sq m site.
• Shear walls to form compartment units, centered with a core structure.
• Walls -- steel form system
• Slabs -- aluminium-strutted flying form system
![Page 66: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/66.jpg)
General detail of the steel form for wall
![Page 67: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/67.jpg)
Detail of large panel wall formwork
![Page 68: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/68.jpg)
The rear elevation with ellipse-shaped core wall serving as kitchen and store room
![Page 69: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/69.jpg)
The rear section with slab constructed using manual timber formwork
![Page 70: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/70.jpg)
• central cores -- constructed in form of vertical shaft. • inner structures – slab, lift walls & landings are cast-in-situ
using timber forms• stair flights -- prefabricated
![Page 71: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/71.jpg)
Releasing the table form
![Page 72: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/72.jpg)
Placing the table form
![Page 73: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/73.jpg)
Forming the inner walls and stair landing within the core shaft
![Page 74: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/74.jpg)
4.7 Park Avenue – Aluminium form• four 46-storey high
residential towers on transfer plate
• aluminium formwork -MIVAN system
• structure consist of a large number of shear wall
![Page 75: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/75.jpg)
Mock up of the Aluminium Form before installation in full scale
![Page 76: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/76.jpg)
General detail of the aluminium form –walls and beams
![Page 77: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/77.jpg)
General detail of the aluminium form –walls and beams
![Page 78: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/78.jpg)
General detail of the aluminium form –walls and beams
![Page 79: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/79.jpg)
General detail of the aluminium form – wall (view from interior)
![Page 80: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/80.jpg)
General detail of the aluminiumform – Floor
![Page 81: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/81.jpg)
General detail of the aluminium form – stair
![Page 82: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/82.jpg)
General detail of the aluminium form – stair
![Page 83: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/83.jpg)
General detail of the aluminium form –Plant box and external features
![Page 84: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/84.jpg)
General detail of the aluminium form – Plant box and external features
![Page 85: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/85.jpg)
General detail of the aluminium form – Plant box and external features
![Page 86: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/86.jpg)
Close up detail
![Page 87: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/87.jpg)
Close up detail
![Page 88: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/88.jpg)
Close up detail
![Page 89: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/89.jpg)
Problems encountered in the using of the Aluminium Form
• Too many formwork accessories that make installation very difficult
• Complicated external wall and spatial design magnify the installation problem
• Inconsistent in the major structural elements require frequent amendment to the formwork
• Resulted to a very long learning curve
![Page 90: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/90.jpg)
Problem of too many insistently sized components
![Page 91: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/91.jpg)
4.8 Nina Plaza• Climb form for the core wall (3 isolated cores)• Modified steel table form for floor slab• Traditional timber form for podium structure
![Page 92: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/92.jpg)
Arrangement of the climb form for one of the building cores
![Page 93: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/93.jpg)
The form in its opened mold
Side view of the form seeing the platform and the jacking rod
![Page 94: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/94.jpg)
Overview of the formwork arrangement for the core and the floor
![Page 95: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/95.jpg)
Floor formed in staggered manner
![Page 96: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/96.jpg)
Propping arrangement and the layout of the table form as seen from the underside
![Page 97: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/97.jpg)
4.9 Some advanced self-climbing systems used in various forms of development - IFCII
![Page 98: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/98.jpg)
Building frame and core wall layout
![Page 99: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/99.jpg)
Formwork at its opened mold
![Page 100: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/100.jpg)
Close up view of the hydraulic jack
Jack for external panels
Jack for inner panels
![Page 101: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/101.jpg)
Operation of the Climb Form (Panels in the inner shaft)
![Page 102: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/102.jpg)
Operation of the Jack System
![Page 103: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/103.jpg)
Setting up of the climb form at the deck level
Deck at the topping out level
![Page 104: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/104.jpg)
Gantry frame, scaffold and Panel shutters as seen in the form interior
![Page 105: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/105.jpg)
Linking the core and the inner wall/slab construction
![Page 106: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/106.jpg)
4.10 Some advanced self-climbing systems used in various forms of development –
Residential Development at Repulse Bay
Formwork Features• A curved apartment-
type tower structure of 28-storey high
• 5 stair-core in parabolic-shape elevation, constructed using climb form
• Modified steel table form for the floors
![Page 107: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/107.jpg)
Detail of the staircase core
![Page 108: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/108.jpg)
Junction detail between core and the floor slab
![Page 109: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/109.jpg)
The table form for the casting of floor
![Page 110: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/110.jpg)
The hydraulic jack mounted on the external face for the lifting of the climb-form system
![Page 111: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/111.jpg)
4.11 Some advanced self-climbing systems used in various forms of development –
Residential Development at Stubb Road
![Page 112: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/112.jpg)
External view of the Jump form
![Page 113: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/113.jpg)
The form system as seen on the deck level
![Page 114: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/114.jpg)
Detail of the screw jack and the motor gear
![Page 115: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/115.jpg)
Detail of the shuttering arrangement
![Page 116: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/116.jpg)
Panel shutters inside the form system
![Page 117: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/117.jpg)
Panel shutters inside the form system
![Page 118: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/118.jpg)
4.12 Some advanced self-climbing systems used in various forms of development –Chartered House
![Page 119: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/119.jpg)
Large panel formwork for the ground floor core wall
![Page 120: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/120.jpg)
Modifying the large panel form into the climb form by adding in the gantry frame and jack system
![Page 121: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/121.jpg)
Overview of the climb form
![Page 122: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/122.jpg)
Arrangement between the core wall and the floor
![Page 123: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/123.jpg)
Layout of the core wall and the gantry/jack system within the core wall shaft
![Page 124: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/124.jpg)
Placing a section of the table form onto the floor slab
![Page 125: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/125.jpg)
Material hoist for the lifting of the table form units
![Page 126: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/126.jpg)
The floor slab and the tensioning arrangement
![Page 127: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/127.jpg)
4.13 Some advanced self-climbing systems used in various forms of development –
Urban Renewal Authority Mong Kong Redevelopment
![Page 128: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/128.jpg)
Forming the transfer plate and the lower section of core wall using manual timber form
The lower section of core wall below the transfer plate
![Page 129: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/129.jpg)
Erection and trial operation of the slip form system
![Page 130: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/130.jpg)
Erection of the slip form on top of the transfer plate
![Page 131: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/131.jpg)
Arrangement for the core wall and floor formwork
![Page 132: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/132.jpg)
Layout/gantry frame arrangement above and below the deck level
![Page 133: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/133.jpg)
Close up detail of the hydraulic jack system
![Page 134: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/134.jpg)
4.14 Some advanced self-climbing systems used in various forms of development –
Concord Project in Fanling Wah Ming Estate
![Page 135: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/135.jpg)
Detail of the jump form for constructing the core wall
![Page 136: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/136.jpg)
Detail and layout of the jump form for constructing a typical wing
![Page 137: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/137.jpg)
Close up seeing the operation detail of the jump form and the guide rail for the panel shutters
![Page 138: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/138.jpg)
4.15.1 Formwork Systems used in Civil Jobs –Ma Wan Elevated Expressway
![Page 139: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/139.jpg)
Complicated falsework is required in the forming of the elevated expressway section
![Page 140: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/140.jpg)
Gantry-type traveling formwork for the casting of the repeated expressway section
![Page 141: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/141.jpg)
4.15.2 Formwork Systems used in Civil Jobs –West Rail Sui Hong Station
![Page 142: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/142.jpg)
Setting-up of the gantry form for the construction of the station structure
![Page 143: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/143.jpg)
A suspended soffit supported by hangers from the gantries. The soffit will be used to cast the suspended slab of the station structure
![Page 144: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/144.jpg)
Detailed view of the gantry system and the suspended station slab
![Page 145: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/145.jpg)
The construction of the station’s superstructure using usual large-panel gang form from the suspended slab
![Page 146: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/146.jpg)
4.15.3 Formwork Systems used in Civil Jobs –West Rail Depot at Pat Sheung
![Page 147: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/147.jpg)
Traveling form for the casting of the repeated station structure/deck
![Page 148: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/148.jpg)
4.15.4 Formwork Systems used in Civil Jobs –Airport Ground Transportation Centre
![Page 149: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/149.jpg)
Traveling form for the forming of the passenger access linking the Airport Terminal Building and the Ground Transportation Center
![Page 150: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/150.jpg)
![Page 151: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/151.jpg)
Detail of the double-decked passageway – waffle floor for the upper deck
![Page 152: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/152.jpg)
Forming the hollow-section curved roof of the GTC
![Page 153: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/153.jpg)
Gantry supporting the roof soffit that formed the under-side of the roof structure
![Page 154: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/154.jpg)
The roof portion above column head that formed using normal soffit panel supported by props
![Page 155: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/155.jpg)
Comparing some formwork cases for circular structures
Circular ramp in Festival Walk
![Page 156: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/156.jpg)
Comparing some formwork cases for circular structures
Circular ramp in IFC-I
![Page 157: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/157.jpg)
Comparing some formwork cases for circular structures
Circular ramp in IFC-II
![Page 158: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/158.jpg)
Comparing some formwork cases for circular structures
Circular ramp in Festival Walk
![Page 159: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/159.jpg)
A spiral-shaped stair
![Page 160: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/160.jpg)
Formwork Collapse Cases – The Festival Walk
![Page 161: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/161.jpg)
Formwork Collapse Cases –a portal beam in the Ma On Shan Station of the KCR East Rail Extension
![Page 162: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/162.jpg)
A portal beam formwork similar to the one collapsed
![Page 163: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/163.jpg)
Formwork Collapse Cases -Industrial Building in Kwai Fook Rord, Kwai Chung, 1995
![Page 164: Formwork Application](https://reader033.vdocuments.site/reader033/viewer/2022061618/55269a3c4a7959d6038b459d/html5/thumbnails/164.jpg)
Summary
The structural form of the building is one of the critical factors to determine the choice of formwork
System products contribute much in the success of formwork application
The choice and arrangement of utilizing formwork is highly depended on individual site/project environment
More collaboration between client, design teams and contractor can help in the effective use of more advance formwork systems